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PHP | Ds\Vector set() Function
  • Last Updated : 22 Aug, 2019

The Ds\Vector::set() function is an inbuilt function in PHP which is used to set the value in the vector at the given index.

Syntax:

void public Ds\Vector::set( $index, $value )

Parameters: This function accepts two parameters as mentioned above and described below:

  • $index: This parameter holds the index value at which the vector value to be updated.
  • $value: This parameter holds the value by which previous element is to be replaced.

Return Value: This function does not return any value.

Exception: This function throws OutOfRangeException if index is invalid.



Below programs illustrate the Ds\Vector::set() function in PHP:

Program 1:

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<?php
  
// Create new Vector
$vect = new \Ds\Vector([1, 2, 3, 4, 5]);
  
// Display the Vector elements
print_r($vect);
  
// Use set() function to set the 
// element in the vector
$vect->set(1, 10);
  
echo("\nVector after updating the element\n");
  
// Display the vector elements
print_r($vect);
  
?>

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Output:

Ds\Vector Object
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

Vector after updating the element
Ds\Vector Object
(
    [0] => 1
    [1] => 10
    [2] => 3
    [3] => 4
    [4] => 5
)

Program 2:

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<?php
  
// Create new Vector
$vect = new \Ds\Vector(["geeks", "of", "geeks"]);
  
// Display the Vector elements
print_r($vect);
  
// Use set() function to set the 
// element in the vector
$vect->set(1, "for");
  
echo("\nVector after updating the element\n");
  
// Display the vector elements
print_r($vect);
  
?>

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Output:

Ds\Vector Object
(
    [0] => geeks
    [1] => of
    [2] => geeks
)

Vector after updating the element
Ds\Vector Object
(
    [0] => geeks
    [1] => for
    [2] => geeks
)

Reference: http://php.net/manual/en/ds-vector.set.php




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